They are particularly concerned for the polar bears, who they believe are wasting away for the lack of ice floes from which to hunt. They are convinced that global warming is causing the extinction of the polar bear by melting all the polar ice. Thus, Greenpeace will launch its Arctic expedition, "Project Thin Ice 2006 -- Saving the Polar Bear," on May 1st from Canada.

Originally, the expedition was scheduled for last year, but was cancelled due to unusually heavy snow and ice.